Malicious PDF — malware analysis report

Static analysis result for SHA-256 e325468c0e29e8ee…

MALICIOUS

PDF

46.6 KB Created: 2021-06-09 06:43:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 587d247b97002384b8a4eaa3f03b2529 SHA-1: a998872ea2f7abede92ea831f9307d90e817e965 SHA-256: e325468c0e29e8ee02775a982bdba23da08b5373923611dbd7972cd98f22a0ac
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.tw/app/431946152/banador-roblox-free-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-how-to-hack-jailbreak_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000054a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54A4 27292 bytes
SHA-256: 9d60f5589cf2f83daebd71228b3eede4018009addf49dc1d2b4e07f3b62f540d
font_01_sfnt_off0000936c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936C 18348 bytes
SHA-256: d9d43165dccf0e26a323102e132d4a12107819bec2ec117b7d0e48954ba925ed

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